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Less brakes, more gas!
 
euro911sc's Avatar
 
Join Date: Jul 2005
Location: Stuart, FL
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Everything was going great... then I dropped a head :(

It slipped out of my hands and dropped about 6"... Here is the damage:



and with loose bits removed...



*sigh* I was simply unpacking them after getting them back from a complete machine and rebuild... obviously not carefully enough.

So, can I use it or do I need to find a replacement? Stock rebuild on a 3.0 ROW SC 9.8:1 comp. I'm pretty sure I can't fix it as getting a TIG in there looks impossible. JB weld maybe...

*sigh* This sux.

Best regards,

Michael

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Old 05-28-2007, 06:42 PM
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I bet a hotshot with a Tig could probably get some of the fins back on? Every other one? Looks to be on the exhaust side right? Sorry to see this.
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Old 05-28-2007, 08:33 PM
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If this was a highly stressed race motor I'd be more worried about it. For a street motor I'd inspect for cracking and other damage (mating surfaces) and install it as is.

The head is basically solid aluminum. Aluminum conducts heat very well. The entire head will be about the same tempurature throughout. You have reduced the cooling area of the head by a small fraction. If you are worried about it you could install it in the coolest location (I'd guess that would be number 4 but maybe someone else knows for sure).

-Andy
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Old 05-28-2007, 09:00 PM
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Call it the "Dexterity Tax."

That head will make a fine paperweight on your desk and a nice story to tell. "It's from James Dean's '82 911SC, dontcha know!"
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Old 05-29-2007, 05:36 AM
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I'd use it as long as the machined surface wasn't damaged.
I probaby removed that much surface area when I twin plugged my motor...
-Chris
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Old 05-29-2007, 08:12 AM
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Agreed it should not matter, but motorcycle restorers do this sort of resto work all the time.
Old 05-29-2007, 09:41 AM
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Like Chris said We take a lot more fin out than that when we twin plug them
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Twinplug, head work, case savers, rockers arms, etc.
Old 05-29-2007, 12:45 PM
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I did that once with a turbocharger exhaust impeller while cleaning it on a wire wheel. The 1 hp motor yanked it and slammed it onto the concrete floor, an equivalent of a 4 story drop. Lesson learned.

I know how you feel, but as others have suggested, should be okay. Mine wasn't.

Shewood
Old 05-29-2007, 01:40 PM
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Excellent, thanks. Do you think it would be worth trying to get it TIG'ed back together? I think a skillful welder could get at least 2 fins complete along the edge and the 3rd one at the edges... What do you all think?

I just kick myself every time I look at it

-michael
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Old 05-29-2007, 07:04 PM
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When I sent mine to Walt, I made a mistake of packing and he told me that UPS damaged one of the cylinders.

He fixed it for cheap and could not tell the difference.

Old 05-29-2007, 09:56 PM
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